Clinical Use of Ultrasensitive Cardiac Troponin I Assay in Intermediate- and High-Risk Surgery Patients
Table 3
Predictors of postoperative troponin peak level in patients without myocardial infarction ().
Troponin < 0.04 µg/L ()
Troponin ≥ 0.04 µg/L ()
Men
49 (51.6)
14 (42.4)
0.42
Age, years
0.67
Revised Cardiac Risk Index
0.95
Class II
9 (9.5)
3 (9.1)
Class III
57 (60)
19 (57.6)
Class IV
29 (30.5)
11 (33.3)
Specific Activity Scale*
0.86
Class I
32 (36)
12 (37.5)
Class II
29 (32.6)
10 (31.3)
Class III
23 (25.8)
7 (21.9)
Class IV
5 (5.6)
3 (9.4)
Vascular surgery
27 (28.4)
11 (33.3)
0.66
Smoking
22 (23.2)
7 (21.2)
0.38
Diabetes mellitus
38 (40)
14 (42.4)
0.84
Atrial fibrillation
6 (6.3)
5 (15.2)
0.15
Heart failure
12 (12.6)
10 (30.3)
0.031
Hypertension
84 (88.4)
26 (78.8)
0.24
Coronary artery disease
49 (51.6)
17 (51.5)
1.00
Myocardial revascularization
21 (22.1)
8 (24.2)
0.81
Cerebrovascular disease
34 (35.8)
8 (24.2)
0.28
Renal impairment
20 (21.1)
12 (36.4)
0.10
Dialysis
7 (7.4)
7 (21.2)
0.047
Peripheral artery disease
14 (14.7)
8 (24.2)
0.28
Preoperative hemoglobin,mg/dL
0.08
Preoperative NT-proBNP ≥ 917 pg/mL
20 (21.5)
16 (50)
0.003
Postoperative NT-proBNP ≥ 2962 pg/mL
16 (16.8)
14 (42.4)
0.004
Preoperative medication
Aspirin
46 (48.4)
12 (36.4)
0.31
ACE inhibitors
53 (55.8)
22 (66.7)
0.31
Beta blocker
45 (47.4)
18 (54.5)
0.55
Statin
55 (57.9)
13 (39.4)
0.07
Transoperatory events
Hypotension (systolic < 100 mmHg)
58 (61.1)
24 (72.7)
0.29
Bradycardia (heart rate < 50 bpm)
23 (24.2)
7 (21.2)
0.81
Major bleeding
7 (7.4)
7 (21.2)
0.047
Data are expressed as number (percentage) or mean ± SD as appropriate. value indicates differences between patients without and with troponin elevation. NT-proBNP: N-terminal pro-B-type natriuretic peptide. .
